Improvement in plows



UNITED STATES PATENT OFFICE.

JOHN O. MINOR, OF BEDFORD, IOWA, ASSIGNOR OF NINE-TENTHS HIS RIGHT TO P.H. OXLEY, JOHN P. BELL, BURSON FORDYOE, A. J. LITLEIR, SIMON WRIGHT, J.T. KING, 1 D. GURRAN, A. WEBB, AND D. GRIFFITH.

IMPROVEMENT IN PLows.

Specification forming part of Letters Patent No. 160,836, dated March16, 1875; application filed April 28, 1874.

To all whom it may concern:

Be it known that I, JoHN O. MINOR, of Bedford, in the county of Taylorand State of Iowa, have invented an Improved Double Plow, of which thefollowing is a specification: M

My invention consists in simple, strong, and durable devices forcoupling two plows together, in such a manner that the draft will be ina central line relative to the two beams and their plows, and that thebeams may be vertically adjusted to raise and lower the plows, andthereby regulate the depth of their furrows, all as hereinafter fullyset forth.

My drawing is a perspective view ill ustrat' ing the construction andoperation of my invention.

A represents a plow-beam of common form. dis a block bolted to the sideand front end of the beam, and braced and protected by the plate 11. cis an open loop suspended vertically at the side and central portion ofthe beam, by suitable braces bolted to the plowbeam. This loop forms abearing for a slide of corresponding form carried by the secondplow-beam. B is the second plow-beam. d is a forked metal plate incasingthe front end of the beam B. The front and closed end of the plate d hasperforated extensions upward and downward. A bolt, f, passed through oneof the holes in the plate 01, and through the block a and beam A, pivotsthe front end of the beam B to the side of the block a, and couples thefront ends of the beams together. By changing the bolt f in the holes ofthe plate d the front end of the beam B is raised and lowered toregulate the depth of the plow attached thereto. 9 is a clevis, heldwith bolts to the block a, and midway between the two beams, to bringthe draft of the team in aline central to the complete double plow. h isa slide, supported by braces attached to the beam B at a point parallelwith the loop 0 on the beam A. This slide it. connects with the loop 0,and, together with their supports or braces, they form an adjustablecoupling device, to hold and lock the two beams rigidly together. 70 isa set-screw, which secures the slide it rigidly to its bearing or loop0. The front ends of the beams are pivoted together, and the rearcoupling is adjustable, and the rear ends of the beams and their plowscan, therefore, by means of the set-screw it, slide h, and loop orbearing 0, be readily raised and lowered relative to each other and tothe ground.

By this means of combination the plows can be set to run at even orirregular depth, as desired. The advance plow can be set to skim the sodor surface, and the rear one to turn the subsoil.

Two common right or left plows, of any form or style desired, can bethus coupled to gether, so that one person and three horses can do asmuch as two persons and four horses can accomplish with two single plowsin the same given time.

I am aware that two plows have been coupled together to run parallelwith each other, but I claim that my manner of coupling is new andadvantageous.

I claim as my invention- 1. The perforated plate d on the front end ofthe beam B, in combination with the block a on the beam A, and theadjustable coupling devices 0 h k on the central portions of the beams Aand B, substantially as shown and described, and for the purposesspecified.

2. The loop or bearing 0 on the beam A, and having the groove 0, incombination with the loop h on the beam B, having the slide it carryingthe set-screw is, substantially as de scribed, and for the purposesspecified.

JOHN O. MINOR.

Witnesses RUssELL B. KINSELL, W. F. OoNKLIN.

